单项选择题
A. 400. B. Less than $ 400. C. Around $ 400. D. More than $ 400.
A. doctor and patient B. husband and wife C. mailman and customer D. parent and child E. colleague F. employer and employee G. student and teacher
A. wait longer than in other countries B. apologize for being late for 40 minutes C. are more polite than people in other countries D. give an explanation for being a little bit late